May 6, 2016, Friday

The husband-and-wife, Democrat-and-Republican pair are two of CNN's best-known contributors. For years they co-hosted "Crossfire"; after it was canceled, they were regulars on "The Situation Room" and election night specials.

Paradox seems to define I. Lewis Libby Jr., who remains a bit mysterious even to close colleagues. He is the White House policy enforcer who also wrote a literary novel; a buttoned-down Washington lawyer who likes knocking back tequila shots in...